<http://schema.org/description>
"Apple on Wednesday issued a broad beta distribution of Mac OS X 10.6.4, the fourth planned maintenance and security update for its Snow Leopard operating system that has been under development internally for several weeks."^^<http://www.w3.org/2001/XMLSchema#string>
<http://appleinsider.com/articles/10/04/28/apple_begins_widespread_testing_of_mac_os_x_10_6_4_update>